| Customization: | Available |
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| Type: | Stainless Steel Bars |
| Standard: | JIS |
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440c round steel
440c alloy
440c steel plate
440c ingredient
sus440c steel
SUS440C refers to Martensioned stainless steel with higher carbon content than 3cr13 steel, so its strength and hardness are higher than 3cr13 steel. Other properties are similar to 3cr13 steel. SUS440C Stainless steel imported from Japan is used for manufacturing bearing parts that work in corrosive environment and strong oxidation without lubrication. The steel also has good dimensional stability at high temperature, which can be used to manufacture corrosion resistant high temperature bearings and tools at temperatures not exceeding 250ºC.
Stainless Steel SUS440C
440C: Carbon content C-1.2% of this steel rust resistance is good, is currently used in high dang batch cutting tools on the market of high-quality stainless steel, its strength and sharpness than ATS-34, chromium content up to 16-18%, is di two most commonly used stainless steel (second only to ATS-34), is also the most early to be accepted by the cutter stainless steel, And it has been popular, especially since a sub-zero process was developed to strengthen steel.
Characteristic:
High hardness and good wear resistance, when grinding, its disadvantage is that the viscosity is relatively large, and heating up quickly, but it is easier than any carbon steel grinding, cutting material with a hand saw is also much easier. The annealing temperature of 440C is very low, the hardness usually reaches HRC56-58, the corrosion resistance and toughness are very strong, is now more widely used in hand tools and high-quality factory tools.
Application:
440C a win hundred special steel after quenching hardness, good corrosion resistance (magnetic) tableware (knife), turbine blade after quenching, than 440 steel hardness increased (magnetic) blade, nozzle, valve, plate ruler, tableware (scissors).
Mechanical properties:
Internal stress (250 N/mm2) Tensile strength (560 N/mm2) EL(18%) HB(250)
Chemical composition:
C: 0.95 ~ 1.20, Si: 1.00, Mn: 1.00, P: 0.040, S: 0.030, Cr: 16.0 ~ 18.0, Mo: 0.75, hardness HRC: 58 ~ 62
Feature application:
440C has the highest hardness of all stainless steel and heat-resistant steel. 440F: It is used to improve the cutting performance of 440C steel. Used for automatic lathes. Martensified stainless steel has the same hardening properties as ordinary alloy steel, so a wide range of different mechanical properties can be obtained by choosing the grade and heat treatment conditions.
Mechanical property
Hardness: annealed,≤269HB; Quenching and tempering,≥55HRC
Heat treatment
Heat treatment specification: 1) annealing,800 ~ 900ºC slow cooling; 2) quenching,1000 ~ 1050ºC oil cooling; 3) Tempering,200 ~ 300ºC air cooling.
Metallographic structure
Metallographic structure: The structure is characterized by martensitic type.
Delivery status
Generally delivered in heat treatment condition, the type of heat treatment indicated in the contract; If not indicated, the goods shall be delivered in non-heat treatment condition
SUS304 is austenitic stainless steel, plasticity is good so its cold working performance is good, at the same time because of its austenitic structure, non-magnetic, magnetic adsorption, heat treatment is difficult to increase its strength, its corrosion resistance is better; SUS440C is martensitic stainless steel, martensitic microstructure, mechanical strength is higher than SUS304, and can be further enhanced by heat treatment to enhance its mechanical properties, magnet adsorption characteristics. Performance determines the use, SUS304 is used to make stainless steel daily necessities, containers, etc., and SUS440 is used for manufacturing tools, tools and other high strength hardness requirements.
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